Stuma j



(No Model.)

N. J. FELIX.

WATCH CASE SPRING.

I No. 290,761. Patented'Dec. 25, 1883.

WITNESSES: INVENTOR N. PEIERS. PhuWLithugr-when Washmglon. u. c.

Arena NUMA J. FELIX, OF NEW YORK, N. Y.

WATCH-CASE SPRENG.

SPECIFICATION forming part of Letters Patent No. 290,761, dated December25, 1883.

Application filed November 17, 1882.

T0 aZZ whom it may concern:

Be it known that 1, Norm J. FELIX, of the city, county, and State of New York, have invented certain new and useful Improvements inIVatclrGase Springs, of which the following is a specification.

This invention has reference to an improved watch-case spring which canbe set quickly into proper position in the watcircase center withoutrequiring any special adj ustment; and the invention consists of awatch-case spring composed of a main portion having a curved end lip orcatch and an auxiliary portion that is attached parallel to themainspring, and provided with downwardlyextending stays, as will be morefully described hereinafter.

In the accompanying drawings, Figure 1 represents a top View of myimproved watchcase spring, shown as applied to a watch-case. Fig. 2 is aperspective view of the watch-case spring; and Fig. 3, a verticaltransverse sec tion on line a a, Fig. 1, drawn on an enlarged scale.

Similar letters of reference indicate corre sponding parts.

My improved watch-case spring is made of two separate piecesa mainpiece, A, of springsteel, provided with a curved lip or catch, a, at itsouter end, and an auxiliary spring-piece, B, which is equal in lengthand height with the body of the mainspring, and riveted or otherwiseattached thereto at both ends. The auxiliary spring-piece Bis providedat its ends with cheeks Z) I), that hold it at some distance from thebody of the main piece A, both pieces forming between them an arc-shapedopening or slot, cl. The auxiliary spring-piece B is further provided atboth ends with downwardly-projecting supports or stays (7/, upon whichthe spring is supported when placed in posi- These stays are filed oiiat the lower tion.

Renewed October 17, 1883. (No model.)

ends, as required, by the height of the watchcase center, with which thespring is to be used. hen the watch-case spring is placed in position inthe center of the watch-ease, so that its lip or catch engages the capof the case, as shown in Fig. 1, it is secured without any furtheradjustment simply by means of a fastening-pin, e, that is passed throughahole in the rim of the watch-case center, as shown in Fig. 3. This pinengages the slot formed by the main and auxiliary pieces of the spring,and retains thereby the spring in position without requiring any specialadj ustment.

By the slot the number of screw-holes which were heretofore required inwatch-case springs for the proper adjustment of the spring in the caseare dispensed with and the spring adapted for use with any size of case,while, furthermore, by the auxiliary spring the mainspring isreeni'orced and rendered stronger and more durable.

Havingthus described my invention, I claim as new and desire to secureby Letters Patent 1. A watch-case spring composed of amain piece, A, andof an auxiliary spring-piece, 13, attached to the body of the mainpiece, so as to form an are-shaped slot for the retainingpin,substantially as set forth.

2. A watclrcase spring composed of a main piece, A, an auxiliaryspring-piece, B, attached to the body of the main piece, and providedwith end cheeks, Z) I), and downwardly-projecting supports or stays (1cl, substantially as specified.

In testimony that I claim the foregoing as my invention I have signed myname in pres ence of two subscribing witnesses.

NUMA J. FELIX.

\Vitnesses:

' PAUL GoEPnL, SIDNEY .MANN.

